The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.

More From This Category

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, 18 with 3/8 in. Holes, Kit

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, 18 with 3/8 in. Holes, Kit

$853.42

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, 18 Raised Port, Kit

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, 18 Raised Port, Kit

$473.30

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, SB2-2 7/16 in. Block w/ 220 ksi ARP2000, Kit

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, SB2-2 7/16 in. Block w/ 220 ksi ARP2000, Kit

$689.18